St Charles Average Gas Price
| Regular | Mid-Grade | Premium | Diesel | E85 | |
|---|---|---|---|---|---|
| Week Ago Avg. | $3.91 | $4.18 | $4.54 | $4.77 | $3.17 |
| Month Ago Avg. | $3.91 | $4.18 | $4.54 | $4.77 | $3.17 |
Highest Recorded Average Gas Price In St Charles Year to Date
| Price | Date | |
|---|---|---|
| Diesel | $4.77 | 06/15/26 |
| Regular | $3.91 | 06/15/26 |
Top 10 Gas Stations & Cheap Fuel Prices in St Charles
QuikTrip in St Charles (225 N Kingshighway St)
225 N Kingshighway St, St Charles, Missouri,
$3.15
Jul 19, 2026
0¢ Cashback
BP in St Charles (1980 S MO-94)
1980 S MO-94, St Charles, Missouri,
$3.19
Jul 19, 2026
0¢ Cashback
Phillips 66 in St Charles (1995 S MO-94)
1995 S MO-94, St Charles, Missouri,
$3.97
Jul 19, 2026
0¢ Cashback
QuikTrip in St Charles (4646 S MO-94)
4646 S MO-94, St Charles, Missouri,
$3.99
Jul 19, 2026
0¢ Cashback
QuikTrip in St Charles (1500 Zumbehl Rd)
1500 Zumbehl Rd, St Charles, Missouri,
$4.07
Jul 19, 2026
0¢ Cashback
QuikTrip in St Charles (3889 Mexico Rd)
3889 Mexico Rd, St Charles, Missouri,
$4.09
Jul 19, 2026
0¢ Cashback
QuikTrip in St Charles (1640 S 5th St)
1640 S 5th St, St Charles, Missouri,
$4.09
Jul 19, 2026
0¢ Cashback
Phillips 66 in St Charles (2301 S Old MO-94)
Old MO-94, St Charles, Missouri,
$4.09
Jul 19, 2026
0¢ Cashback
Huck's in St Charles (1020 Country Club Rd)
1020 Country Club Rd, St Charles, Missouri,
$4.09
Jul 19, 2026
0¢ Cashback
QuikTrip in St Charles (2260 1st Capitol Dr)
2260 1st Capitol Dr, St Charles, Missouri,
$4.09
Jul 19, 2026
0¢ Cashback
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Gas Data Methodology
The fuel prices published in this guide are based on the results of research completed by Way.com’s data team. Using a mix of external and internal data, we analyzed millions of prices across U.S. ZIP codes and globally.